First Class “Flats”
The Postal Service uses the word “flats” to refer to large envelopes, newsletters and magazines.
Weights and Sizes
|To qualify as a first class flat, envelopes must:
Is it possible to fold your flat-size piece to letter-size? If so, you can save money because you’ll pay the lower letter price (see more information on First Class Letters here)
Tips for shipping flats-
- The font and writing of the address should be proportional to the size of the envelope for easy reading. Don’t use tiny fonts on a large envelope because they won’t be caught as easily.
- If the envelope is not bendable because it contains a key, a cd, a book, cardboard, photographs etc… it will be charged a “non-machinable” surcharge and bumped up in class to a parcel.
- If you use the manila envelopes with brad enclosures, please tape over the metal. Sometimes (not always) the metal can catch on the postage machine and rip the envelope 🙁